Monthly outlook for Herron, MT: average high 53.9°, average low 37.1°. That is 1° below the climate normal for October. Precipitation is expected on 5 days (about 1.3 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 18 October (71.5°), the coolest 13 October (27.1°).
53.9°/37.1°
Average high / low
−1°
Below normal
5 / 2
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
52°
56.4°
-2.4°
20 October – 29 October
56.9°
52.9°
+2.2°
30 October – 8 November
at normal
46.4°
—
October records over 66 years
86.4°7 October 1980All-time high
-16.1°29 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Kremlin (15 mi).
Sun, 1138° / 31°0.4
38 °
Herron, Sunday, 11 October
Snow. High 38°, low 31°.
Pressure30.18 inHg
Wind11.5 mph NE
Humidity95%
Visibility2.5 mi
Dew point34°
Mon, 1237° / 31°0.33
37 °
Herron, Monday, 12 October
Snow. High 37°, low 31°.
Pressure30.18 inHg
Wind2.6 mph NE
Humidity95%
Visibility2.8 mi
Dew point33°
Tue, 1346° / 27°0
46 °
Herron, Tuesday, 13 October
Partly cloudy. High 46°, low 27°.
Pressure30.15 inHg
Wind7.5 mph W
Humidity79%
Visibility6.2 mi
Dew point30°
Wed, 1455° / 30°0
55 °
Herron, Wednesday, 14 October
Clear. High 55°, low 30°.
Pressure30.24 inHg
Wind4.9 mph SW
Humidity57%
Visibility—
Dew point30°
Thu, 1559° / 36°0
59 °
Herron, Thursday, 15 October
Partly cloudy. High 59°, low 36°.
Pressure30.36 inHg
Wind13.7 mph NE
Humidity54%
Visibility—
Dew point33°
Fri, 1643° / 33°0
43 °
Herron, Friday, 16 October
Overcast. High 43°, low 33°.
Pressure30.77 inHg
Wind21.7 mph NW
Humidity46%
Visibility—
Dew point19°
Sat, 1755° / 29°0
55 °
Herron, Saturday, 17 October
Mostly clear. High 55°, low 29°.
Pressure30.24 inHg
Wind7.2 mph SE
Humidity31%
Visibility—
Dew point14°
Sun, 1871° / 44°0
71 °
Herron, Sunday, 18 October
Mostly clear. High 71°, low 44°.
Pressure29.77 inHg
Wind23.7 mph W
Humidity23%
Visibility—
Dew point24°
Mon, 1959° / 45°0
59 °
Herron, Monday, 19 October
Overcast. High 59°, low 45°.
Pressure29.97 inHg
Wind10.2 mph SW
Humidity37%
Visibility—
Dew point28°
Tue, 2066° / 46°0
66 °
Herron, Tuesday, 20 October
Overcast. High 66°, low 46°.
Pressure29.68 inHg
Wind20.6 mph SW
Humidity30%
Visibility—
Dew point28°
Wed, 2155° / 44°0
55 °
Herron, Wednesday, 21 October
Overcast. High 55°, low 44°.
Pressure29.80 inHg
Wind15.7 mph NW
Humidity49%
Visibility—
Dew point34°
Thu, 2259° / 41°0
59 °
Herron, Thursday, 22 October
Overcast. High 59°, low 41°.
Pressure29.80 inHg
Wind23.8 mph W
Humidity38%
Visibility—
Dew point27°
Fri, 2356° / 41°0.19
56 °
Herron, Friday, 23 October
Light rain. High 56°, low 41°.
Pressure29.56 inHg
Wind21.8 mph W
Humidity52%
Visibility—
Dew point38°
Sat, 2454° / 38°0
54 °
Herron, Saturday, 24 October
Partly cloudy. High 54°, low 38°.
Pressure30.03 inHg
Wind13.1 mph SW
Humidity55%
Visibility—
Dew point32°
Sun, 2552° / 43°0.13
52 °
Herron, Sunday, 25 October
Light rain. High 52°, low 43°.
Pressure29.23 inHg
Wind30.6 mph W
Humidity41%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2651° / 35°0.04
51 °
Herron, Monday, 26 October
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.04 in
Chance of precipitation18%
Record high72° (1960)
Record low9° (2020)
Tue, 2751° / 33°0.04
51 °
Herron, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high51°
Average low33°
Average precipitation0.04 in
Chance of precipitation17%
Record high69° (2024)
Record low10° (2023)
Wed, 2850° / 31°0.02
50 °
Herron, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high50°
Average low31°
Average precipitation0.02 in
Chance of precipitation17%
Record high71° (1973)
Record low-6° (1991)
Thu, 2949° / 31°0.03
49 °
Herron, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.03 in
Chance of precipitation17%
Record high72° (2008)
Record low-16° (1991)
Fri, 3049° / 30°0.02
49 °
Herron, Friday, 30 October
Climate normal for this date — 60-year average.
Average high49°
Average low30°
Average precipitation0.02 in
Chance of precipitation10%
Record high68° (1983)
Record low-15° (1991)
Sat, 3147° / 30°0.04
47 °
Herron, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.04 in
Chance of precipitation18%
Record high66° (2008)
Record low-11° (1984)
Sun, 0147° / 30°0.01
47 °
Herron, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.01 in
Chance of precipitation12%
Record high68° (1965)
Record low-18° (1984)
Mon, 0247° / 30°0.02
47 °
Herron, Monday, 2 November
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.02 in
Chance of precipitation20%
Record high65° (1978)
Record low-18° (1991)
Tue, 0348° / 30°0.02
48 °
Herron, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.02 in
Chance of precipitation15%
Record high66° (1983)
Record low-9° (1991)
Wed, 0448° / 32°0.03
48 °
Herron, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high48°
Average low32°
Average precipitation0.03 in
Chance of precipitation15%
Record high69° (1975)
Record low5° (2003)
Thu, 0546° / 30°0.04
46 °
Herron, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high46°
Average low30°
Average precipitation0.04 in
Chance of precipitation20%
Record high68° (1975)
Record low-10° (2003)
Fri, 0645° / 28°0.02
45 °
Herron, Friday, 6 November
Climate normal for this date — 60-year average.
Average high45°
Average low28°
Average precipitation0.02 in
Chance of precipitation17%
Record high67° (2010)
Record low3° (2003)
Sat, 0744° / 29°0.02
44 °
Herron, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high44°
Average low29°
Average precipitation0.02 in
Chance of precipitation18%
Record high71° (2010)
Record low-5° (1973)
Sun, 0844° / 27°0.05
44 °
Herron, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high44°
Average low27°
Average precipitation0.05 in
Chance of precipitation22%
Record high61° (1999)
Record low-3° (1973)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Herron, MT are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Herron, MT since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.